39964671 has 20 divisors (see below), whose sum is σ = 63214272. Its totient is φ = 25075008.

The previous prime is 39964643. The next prime is 39964747. The reversal of 39964671 is 17646993.

It is not a de Polignac number, because 39964671 - 2⁹ = 39964159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39960671) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13135 + ... + 15888.

Almost surely, 2^39964671 is an apocalyptic number.

39964671 is a deficient number, since it is larger than the sum of its proper divisors (23249601).

39964671 is a wasteful number, since it uses less digits than its factorization.

39964671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29052 (or 29043 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 39964671 is about 6321.7617006654. The cubic root of 39964671 is about 341.8944734442.

The spelling of 39964671 in words is "thirty-nine million, nine hundred sixty-four thousand, six hundred seventy-one".